Recommendations for 1000

I need better audio for my home. I am using my computer to play music with a sound blaster X-fi card with Optical out and in and every other basic output. It is hooked up to a projector and is often used for dvds. I'm uncertain whether i should get 5.1 or stay two channel. I have a budget of 1k and need speakers and a receiver or amp. I am willing to buy receiver and 2 speakers now and add later if I must. I need some recommendation. I was leaning towards 2 floor stand klipsch and their 12 inch subwoofer. Thanks.